30761131 has 4 divisors (see below), whose sum is σ = 30931264. Its totient is φ = 30591000.

The previous prime is 30761119. The next prime is 30761149. The reversal of 30761131 is 13116703.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13116703 = 59 ⋅222317.

It is a cyclic number.

It is not a de Polignac number, because 30761131 - 2¹¹ = 30759083 is a prime.

It is a super-2 number, since 2×30761131² = 1892494360798322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30761161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84795 + ... + 85156.

It is an arithmetic number, because the mean of its divisors is an integer number (7732816).

Almost surely, 2^30761131 is an apocalyptic number.

30761131 is a deficient number, since it is larger than the sum of its proper divisors (170133).

30761131 is a wasteful number, since it uses less digits than its factorization.

30761131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170132.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 30761131 is about 5546.2718108654. The cubic root of 30761131 is about 313.3291253647.

Adding to 30761131 its reverse (13116703), we get a palindrome (43877834).

The spelling of 30761131 in words is "thirty million, seven hundred sixty-one thousand, one hundred thirty-one".